It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.

ZenScript
 Copy
import crafttweaker.api.loot.LootContext;

Nombre	Type	Has Getter	Has Setter
Nombre blockEntity	Type BlockEntity?	Has Getter true	Has Setter false
Nombre blockState	Type BlockState?	Has Getter true	Has Setter false
Nombre damageSource	Type DamageSource?	Has Getter true	Has Setter false
Nombre directKillerEntity	Type Entity?	Has Getter true	Has Setter false
Nombre explosionRadius	Type float	Has Getter true	Has Setter false
Nombre killerEntity	Type Entity?	Has Getter true	Has Setter false
Nombre lastDamagePlayer	Type Player?	Has Getter true	Has Setter false
Nombre level	Type ServerLevel	Has Getter true	Has Setter false
Nombre luck	Type float	Has Getter true	Has Setter false
Nombre origin	Type Vec3?	Has Getter true	Has Setter false
Nombre random	Type RandomSource	Has Getter true	Has Setter false
Nombre thisEntity	Type Entity?	Has Getter true	Has Setter false
Nombre tool	Type IItemStack	Has Getter true	Has Setter false